<p>
  Título:   <%= form.text_field :title, :size => 30  %>
</p>
<p>
  Autor:   <%= form.text_field :author, :size => 30  %>
</p>
<p>
  Editora:
  <%=
   @publishers = Book.find(:all, :order => 'publisher')
   form.collection_select(:publisher, @publishers, :publisher, :publisher, :prompt => "Selecione uma editora")
  %>
</p>
<p>
  Categoria:
  <%=
   @categories = Book.find(:all, :order => 'category')
   form.collection_select(:category, @categories, :category, :category, :prompt => "Selecione uma categoria")
  %>
</p>